US10455388B2 - Access network node, core network node, and paging method - Google Patents

Access network node, core network node, and paging method Download PDF

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Publication number
US10455388B2
US10455388B2 US15/444,025 US201715444025A US10455388B2 US 10455388 B2 US10455388 B2 US 10455388B2 US 201715444025 A US201715444025 A US 201715444025A US 10455388 B2 US10455388 B2 US 10455388B2
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terminal
network node
coverage
access network
paging message
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US20170171694A1 (en
Inventor
Lei Liu
Yang Zhao
Chongming ZHANG
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Assigned to HUAWEI TECHNOLOGIES CO., LTD. reassignment HUAWEI TECHNOLOGIES CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZHANG, CHONGMING, LIU, LEI, ZHAO, YANG
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/08—User notification, e.g. alerting and paging, for incoming communication, change of service or the like using multi-step notification by increasing the notification area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/12—Interfaces between hierarchically different network devices between access points and access point controllers

Definitions

  • the embodiments of the present invention relate to the communications field, and in particular, to an access network node, a core network node, and a paging method.
  • M2M machine to machine
  • Communication between machines may be implemented by using the M2M services and a wireless network bearer.
  • the M2M services are widely used in fields such as intelligent power, intelligent transportation, and smart household.
  • a remote meter reading service may be implemented by using an M2M terminal.
  • the terminal changes from a ready state to a standby state.
  • the network side After the M2M terminal enters a standby state, if the network side needs to send packet data to the M2M terminal, the network side first needs to page the M2M terminal to establish a connection to the M2M terminal, and then sends the packet data to the M2M terminal. Because the M2M terminal is usually deployed in airtight space such as a basement, to successfully page the M2M terminal, the network side needs to use a coverage enhancement technology in a process of paging the M2M terminal.
  • the embodiments of the present invention provide an access network node, a core network node, and a paging method, so as to resolve a problem that an M2M service cannot be normally used because a network side cannot determine whether a coverage enhancement technology needs to be used in a paging process.
  • an access network node includes a communications interface, a processor, and a transmitter, where:
  • the communications interface is configured to receive a first packet paging message sent by a core network node, where the first packet paging message is used for paging a terminal;
  • the processor is configured to determine, according to the first packet paging message received by using the communications interface, that the terminal is a machine to machine (M2M) terminal; and
  • the transmitter is configured to send a coverage-enhanced second packet paging message to the terminal.
  • the first packet paging message includes terminal information of the terminal, and the terminal information includes a terminal type;
  • the processor is specifically configured to determine, according to the terminal type included in the terminal information, that the terminal is the M2M terminal.
  • the terminal information further includes a terminal coverage level, and the coverage level is used by the access network node to determine a coverage enhancement level when the access network node pages the terminal;
  • the transmitter is specifically configured to send the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level.
  • the access network node further includes a receiver, where:
  • the receiver is configured to receive a new coverage level sent by the terminal, and the communications interface is further configured to send, to the core network node, the new coverage level received by the receiver;
  • the receiver is configured to receive coverage information sent by the terminal
  • the processor is further configured to determine a new coverage level according to the coverage information received by the receiver
  • the communications interface is further configured to send, to the core network node, the new coverage level obtained by the processor
  • the receiver is configured to receive coverage information sent by the terminal, and the communications interface is further configured to send, to the core network node, the coverage information received by the receiver.
  • the first packet paging message includes an international mobile subscriber identity (IMSI) of the terminal.
  • IMSI international mobile subscriber identity
  • the processor is specifically configured to: obtain a terminal type according to the IMSI and a pre-stored mapping table, where the mapping table includes the IMSI and the terminal type corresponding to the IMSI; and determine, according to the terminal type, that the terminal is the M2M terminal.
  • the mapping table further includes a terminal coverage level corresponding to the IMSI.
  • the transmitter is specifically configured to obtain the terminal coverage level according to the IMSI and the mapping table, and send the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level.
  • the access network node further comprises a receiver, the receiver is further configured to receive a new coverage level sent by the terminal, and the processor is further configured to update the terminal coverage level in the mapping table according to the new coverage level received by the receiver;
  • the receiver is further configured to receive coverage information sent by the terminal
  • the processor is further configured to determine a new coverage level according to the coverage information received by the receiver, and update the terminal coverage level in the mapping table according to the new coverage level.
  • a core network node includes a communications interface, where:
  • the communications interface is configured to send a first packet paging message to an access network node, where the first packet paging message is used for paging a terminal, the first packet paging message includes terminal information of the terminal, and the terminal information includes a terminal type.
  • the terminal information further includes a terminal coverage level, and the coverage level is used by the access network node to determine a coverage enhancement level when the access network node pages the terminal.
  • the core network node further includes a processor, where:
  • the processor is configured to obtain the terminal information according to an international mobile subscriber identity (IMSI) of the terminal and a pre-stored mapping table before the first packet paging message is sent to the access network node by using the communications interface, where the mapping table includes the IMSI and the terminal information that corresponds to the IMSI and that is of the terminal.
  • IMSI international mobile subscriber identity
  • the communications interface is further configured to receive a new coverage level sent by the access network node, and the processor is further configured to update the terminal coverage level in the terminal information according to the new coverage level received by using the communications interface;
  • the communications interface is further configured to receive coverage information sent by the access network node
  • the processor is further configured to determine a new coverage level according to the coverage information received by using the communications interface, and update the terminal coverage level in the terminal information according to the new coverage level.
  • a paging method includes:
  • M2M machine to machine
  • the first packet paging message includes terminal information of the terminal, and the terminal information includes a terminal type;
  • the determining, by the access network node according to the first packet paging message, that the terminal is a machine to machine (M2M) terminal includes:
  • the terminal is the M2M terminal.
  • the terminal information further includes a terminal coverage level, and the coverage level is used by the access network node to determine a coverage enhancement level when the access network node pages the terminal;
  • the sending, by the access network node, a coverage-enhanced second packet paging message to the terminal includes:
  • the method further includes:
  • the first packet paging message includes an international mobile subscriber identity (IMSI) of the terminal.
  • IMSI international mobile subscriber identity
  • the determining, by the access network node according to the first packet paging message, that the terminal is a machine to machine (M2M) terminal includes:
  • mapping table includes the IMSI and the terminal type corresponding to the IMSI
  • the mapping table further includes a terminal coverage level corresponding to the IMSI.
  • the sending, by the access network node, a coverage-enhanced second packet paging message to the terminal includes:
  • the method further includes:
  • a paging method includes:
  • the first packet paging message includes terminal information of the terminal, and the terminal information includes a terminal type.
  • the terminal information further includes a terminal coverage level, and the coverage level is used by the access network node to determine a coverage enhancement level when the access network node pages the terminal.
  • the method before the sending, by a core network node, a first packet paging message to an access network node, the method further includes:
  • the core network node obtaining, by the core network node, the terminal information according to an international mobile subscriber identity (IMSI) of the terminal and a pre-stored mapping table, where the mapping table includes the IMSI and the terminal information that corresponds to the IMSI and that is of the terminal.
  • IMSI international mobile subscriber identity
  • the method further includes:
  • the access network node after receiving a first packet paging message sent by the core network node, the access network node can determine, according to the first packet paging message, whether a paged terminal is an M2M terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • the access network node can determine a type of the paged terminal by using the first packet paging message sent by the core network node, and send a corresponding second packet paging message to the terminal according to the determined type of the terminal. Therefore, after determining that the paged terminal is the M2M terminal, the access network node sends the coverage-enhanced second packet paging message to the terminal, and normal use of an M2M service of the terminal is ensured.
  • FIG. 1 is a schematic composition diagram of an access network node according to an embodiment of the present invention.
  • FIG. 2 is a schematic composition diagram of another access network node according to an embodiment of the present invention.
  • FIG. 3 is a schematic composition diagram of a core network node according to another embodiment of the present invention.
  • FIG. 4 is a schematic composition diagram of another core network node according to another embodiment of the present invention.
  • FIG. 5 is a flowchart of a paging method according to another embodiment of the present invention.
  • FIG. 6 is a flowchart of a paging method according to another embodiment of the present invention.
  • FIG. 7 is a flowchart of a paging method according to another embodiment of the present invention.
  • FIG. 8 is a flowchart of routing area update according to another embodiment of the present invention.
  • FIG. 9 is a flowchart of another paging method according to another embodiment of the present invention.
  • system and “network” may be used interchangeably in this specification.
  • network may be used interchangeably in this specification.
  • the term “and/or” in this specification describes only an association relationship for associated objects and represents that three relationships may exist. For example, A and/or B may represent the following three cases: Only A exists, both A and B exist, and only B exists.
  • the character “/” in this specification generally indicates an “or” relationship between the associated objects.
  • An embodiment of the present invention provides an access network node.
  • the access network node may include a communications interface 11 , a processor 12 , and a transmitter 13 .
  • the communications interface 11 is configured to receive a first packet paging message sent by a core network node, and the first packet paging message is used for paging a terminal.
  • the processor 12 is configured to determine, according to the first packet paging message received by using the communications interface 11 , that the terminal is an M2M terminal.
  • the transmitter 13 is configured to send a coverage-enhanced second packet paging message to the terminal.
  • the first packet paging message further includes terminal information of the terminal, and the terminal information includes a terminal type.
  • the processor 12 is specifically configured to determine, according to the terminal type included in the terminal information, that the terminal is the M2M terminal.
  • the terminal information further includes a terminal coverage level, and the coverage level is used by the access network node to determine a coverage enhancement level when the access network node pages the terminal.
  • the transmitter 13 is specifically configured to send the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level.
  • the access network node may further include a receiver 14 .
  • the receiver 14 is configured to receive a new coverage level sent by the terminal, and the communications interface 11 is further configured to send, to the core network node, the new coverage level received by the receiver 14 ; or
  • the receiver 14 is configured to receive coverage information sent by the terminal
  • the processor 12 is further configured to determine a new coverage level according to the coverage information received by the receiver 14
  • the communications interface 11 is further configured to send, to the core network node, the new coverage level obtained by the processor 12 ;
  • the receiver 14 is configured to receive coverage information sent by the terminal, and the communications interface 11 is further configured to send, to the core network node, the coverage information received by the receiver 14 .
  • the first packet paging message further includes an international mobile subscriber identity (IMSI) of the terminal.
  • IMSI international mobile subscriber identity
  • the processor 12 is specifically configured to obtain a terminal type according to the IMSI and a pre-stored mapping table, and determine, according to the obtained terminal type, that the terminal is the M2M terminal.
  • the mapping table includes the IMSI and the terminal type corresponding to the IMSI.
  • the mapping table further includes a terminal coverage level corresponding to the IMSI.
  • the transmitter 13 is specifically configured to obtain the terminal coverage level according to the IMSI and the mapping table, and send the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level.
  • the receiver 14 is further configured to receive a new coverage level sent by the terminal
  • the processor 12 is further configured to update the terminal coverage level in the mapping table according to the new coverage level received by the receiver 14 ;
  • the receiver 14 is further configured to receive coverage information sent by the terminal
  • the processor 12 is further configured to determine a new coverage level according to the coverage information received by the receiver 14 , and update the terminal coverage level in the mapping table according to the determined new coverage level.
  • the access network node After a first packet paging message sent by a core network node is received, whether a paged terminal is an M2M terminal may be determined according to the first packet paging message, and after the paged terminal is determined as the M2M terminal, a coverage-enhanced second packet paging message is sent to the terminal.
  • the access network node can determine a type of the paged terminal by using the first packet paging message sent by the core network node, and send a corresponding second packet paging message to the terminal according to the determined type of the terminal. Therefore, after determining that the paged terminal is the M2M terminal, the access network node sends the coverage-enhanced second packet paging message to the terminal, and normal use of an M2M service of the terminal is ensured.
  • the first packet paging message sent by the core network node to the access network node may further include a terminal coverage level.
  • the access network node may send the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level included in the first packet paging message.
  • the access network node can determine, according to an IMSI that is included in the first packet paging message sent by the core network node and that is of the terminal, the coverage level of the terminal that needs to be paged. In this way, the access network node may send a coverage-enhanced second packet paging message of a corresponding level to the terminal according to the obtained terminal coverage level.
  • the access network node sends the coverage-enhanced second packet paging message of the corresponding level to the terminal according to a coverage requirement of the terminal, so that a paging success rate of the M2M terminal is increased, and the normal use of the M2M service of the terminal is further ensured.
  • the core network node may include a communications interface 21 .
  • the communications interface 21 is configured to send a first packet paging message to an access network node, where the first packet paging message is used for paging a terminal, the first packet paging message includes terminal information of the terminal, and the terminal information includes a terminal type.
  • the terminal information further includes a terminal coverage level, and the coverage level is used by the access network node to determine a coverage enhancement level when the access network node pages the terminal.
  • the core network node may further include a processor 22 .
  • the processor 22 is configured to obtain the terminal information according to an IMSI of the terminal and a pre-stored mapping table before the first packet paging message is sent to the access network node by using the communications interface 21 .
  • the mapping table includes the IMSI and the terminal information that corresponds to the IMSI and that is of the terminal.
  • the communications interface 21 is further configured to receive a new coverage level sent by the access network node, and the processor 22 is further configured to update the terminal coverage level in the terminal information according to the new coverage level received by using the communications interface 21 ; or the communications interface 21 is further configured to receive coverage information sent by the access network node, and the processor 22 is further configured to determine a new coverage level according to the coverage information received by using the communications interface 21 , and update the terminal coverage level in the terminal information according to the determined new coverage level.
  • a first packet paging message including terminal information is sent to an access network node, so that after receiving the first packet paging message sent by the core network node, the access network node can determine, according to the terminal information that is carried in the first packet paging message and that includes a terminal type, whether a paged terminal is an M2M terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • the first packet paging message sent by the core network node to the access network node includes the type of the paged terminal, so that the access network node can determine the type of the paged terminal according to the received first packet paging message, and send a corresponding second packet paging message to the terminal according to the determined type of the terminal. Therefore, after determining that the paged terminal is the M2M terminal, the access network node sends the coverage-enhanced second packet paging message to the terminal, and normal use of an M2M service of the terminal is ensured.
  • the first packet paging message sent by the core network node to the access network node may further include a terminal coverage level.
  • the access network node may send the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level included in the first packet paging message.
  • the access network node may send a coverage-enhanced second packet paging message of a corresponding level to the terminal according to a coverage requirement of the terminal, so that a paging success rate of the M2M terminal is increased, and the normal use of the M2M service of the terminal is further ensured.
  • Another embodiment of the present invention provides a paging method. As shown in FIG. 5 , the method may include the following steps.
  • An access network node receives a first packet paging message sent by a core network node.
  • the first packet paging message is used for paging a terminal, and the first packet paging message includes information used to determine that the paged terminal is an M2M terminal.
  • the access network node determines, according to the first packet paging message, that a terminal is an M2M terminal.
  • the access network node After receiving the first packet paging message sent by the core network node, the access network node can determine, according to the first packet paging message, whether the terminal paged by the core network node is the M2M terminal. After the terminal paged by the core network node is determined as the M2M terminal, perform S 303 . Specifically, the access network node may determine, according to the information that is included in the first packet paging message and that is used to determine that the paged terminal is the M2M terminal, whether the terminal paged by the core network node is the M2M terminal.
  • the access network node sends a coverage-enhanced second packet paging message to the terminal.
  • the access network node may send the coverage-enhanced second packet paging message to the terminal after determining that the terminal paged by the core network node is the M2M terminal, so that the terminal is successfully paged, and normal use of an M2M service running on the terminal is ensured.
  • an access network node after receiving a first packet paging message sent by a core network node, an access network node can determine, according to the first packet paging message, whether a paged terminal is an M2M terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • the access network node can determine a type of the paged terminal by using the first packet paging message sent by the core network node, and send a corresponding second packet paging message to the terminal according to the determined type of the terminal. Therefore, after determining that the paged terminal is the M2M terminal, the access network node sends the coverage-enhanced second packet paging message to the terminal, and normal use of an M2M service of the terminal is ensured.
  • Another embodiment of the present invention provides a paging method. As shown in FIG. 6 , the method may include the following step:
  • a core network node sends a first packet paging message to an access network node.
  • the first packet paging message is used for paging a terminal, the first packet paging message includes terminal information of the paged terminal, and the terminal information includes a type of the paged terminal. Because an M2M terminal is usually deployed in airtight space such as a basement, to successfully page the M2M terminal, the core network node may add the type of the paged terminal to the first packet paging message sent to the access network node.
  • the access network node After receiving the first packet paging message, the access network node can determine, according to the terminal type included in the first packet paging message, whether the paged terminal is an M2M terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal, so that the terminal is successfully paged, and normal use of an M2M service of the terminal is ensured.
  • a core network node may send a first packet paging message including a terminal type to an access network node, so that after receiving the first packet paging message sent by the core network node, the access network node can determine, according to the first packet paging message, whether a paged terminal is an M2M terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • the first packet paging message sent by the core network node to the access network node includes the type of the paged terminal, so that the access network node can determine, according to the received first packet paging message, the type of the paged terminal, and send a corresponding second packet paging message to the terminal according to the determined type of the terminal. Therefore, after determining that the paged terminal is the M2M terminal, the access network node sends the coverage-enhanced second packet paging message to the terminal, and normal use of an M2M service of the terminal is ensured.
  • Another embodiment of the present invention provides a paging method.
  • an M2M terminal is usually deployed in airtight space such as a basement.
  • an access network node needs to use a coverage enhancement technology in a process of paging the M2M terminal.
  • the access network node does not know whether a type of a paged terminal is the M2M terminal in the paging process. Therefore, the access network node cannot determine whether the coverage enhancement technology needs to be used, and consequently, an M2M service cannot be normally used.
  • information that is included in a first packet paging message and that is used to determine that the paged terminal is the M2M terminal is terminal information of the terminal.
  • the access network node can determine the type of the paged terminal according to the terminal information that is included in the received first packet paging message and that is of the terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • this method may include the following steps.
  • a core network node obtains terminal information according to an IMSI of a terminal and a pre-stored mapping table.
  • the pre-stored mapping table in the core network node includes the IMSI of the terminal and the terminal information that corresponds to the IMSI and that is of the terminal, and the terminal information may include a terminal type.
  • the core network node may obtain, according to registration information of the terminal, the IMSI of the terminal and the terminal type corresponding to the IMSI, and store, in the terminal information in the mapping table, the obtained IMSI of the terminal and the obtained terminal type corresponding to the IMSI.
  • the IMSI of the terminal and the terminal type corresponding to the IMSI may be obtained by the core network node according to subscription information of the terminal, or the IMSI of the terminal and the terminal type corresponding to the IMSI may be obtained according to an upper-layer service used by the terminal.
  • a manner for obtaining the IMSI of the terminal and the terminal type corresponding to the IMSI is not specifically limited in this embodiment of the present invention.
  • the terminal information may further include a terminal coverage level, that is, the mapping table may further include a terminal coverage level corresponding to the IMSI.
  • the coverage level is used by the access network node to determine a coverage enhancement level when the access network node pages the terminal.
  • the core network node may obtain the terminal coverage level corresponding to the IMSI of the terminal when the terminal accesses a network, and store, in the terminal information in the mapping table, the obtained terminal coverage level corresponding to the IMSI. After the terminal accesses the network, the terminal coverage level may change. Therefore, the core network node needs to update the terminal coverage level that is in the terminal information and that corresponds to the IMSI of the terminal. Specifically, when the terminal coverage level changes, the core network node may obtain, in any one of the following manners, a new coverage level that is of the terminal and that corresponds to the IMSI of the terminal, and then update, according to the new coverage level, the terminal coverage level that is in the terminal information and that corresponds to the IMSI of the terminal.
  • Manner 1 The core network node receives a new coverage level sent by the access network node, and updates the terminal coverage level in the terminal information according to the received new coverage level.
  • a manner for receiving, by the core network node, the new coverage level sent by the access network node is as follows: The access network node receives a new coverage level sent by the terminal, and then sends the received new coverage level to the core network node.
  • the core network node can receive the new coverage level sent by the access network node.
  • the new coverage level sent by the access network node may be obtained by the core network node in any one of the following procedures.
  • the new coverage level sent by the access network node may be obtained by the core network node in a routing area update procedure.
  • the routing area update procedure may be triggered in the following manners: The terminal detects a routing area change, or the terminal enables a general packet radio service technology (GPRS) service again, or the terminal needs to use a new wireless access capability to update the network, or the terminal periodically notifies the network of accessibility of the terminal.
  • GPRS general packet radio service technology
  • the routing area update procedure may be shown in FIG. 8 .
  • the terminal sends a Routing Area Update Request message to the core network node by means of the access network node.
  • MM mobility management
  • P-TMSI packet-temporary mobile subscriber identity
  • the terminal If the terminal receives the P-TMSI allocated by the core network node, that is, the P-TMSI is successfully allocated, the terminal sends a Routing Area Update Complete message to the core network node by means of the access network node.
  • the terminal may report the new coverage level of the terminal to the core network node by adding an optional information element to the Routing Area Update Request message or a Routing Area Update Complete message. That is, the terminal may add, to the Routing Area Update Request message or the Routing Area Update Complete message, the optional information element that carries the new coverage level of the terminal, so as to report the new coverage level of the terminal to the core network node.
  • the new coverage level sent by the access network node may be obtained by the core network node in a cell update procedure.
  • the terminal When the terminal is in a ready state under an idle mode or a transmission mode, and a cell in which the terminal is located changes, but a routing area in which the terminal is located does not change, the terminal triggers the cell update procedure.
  • the cell update procedure initiated by the terminal may be specifically as follows: The terminal sends any message to the access network node, and after receiving the any message, the access network node adds a cell global identity to the any message, and sends the any message to the core network node. After the core network node receives the any message that carries the cell global identity, if the core network node discovers that the cell global identity carried in the any message is inconsistent with a cell global identity that is stored in the core network node and that corresponds to the terminal, the core network node determines that the terminal initiates the cell update procedure.
  • the cell update procedure initiated by the terminal may be specifically as follows: The terminal sends a specific message to the core network node by means of the access network node, so as to initiate the cell update procedure.
  • the terminal may add the new coverage level of the terminal to the any message, and send the any message to the core network node by means of the access network node, so that the core network node obtains the new coverage level of the terminal according to the received any message.
  • the terminal may add the new coverage level of the terminal to the specific message, and send the specific message to the core network node by means of the access network node, so that the core network node obtains the new coverage level of the terminal according to the received specific message.
  • the cell update procedure initiated by the terminal may be specifically as follows:
  • the terminal sends a Cell Update message to the core network node by means of the access network node, to initiate the cell update procedure.
  • the Cell Update message is sent by the terminal after a more appropriate neighboring cell is discovered by means of measurement in a packet transmission process.
  • the terminal may add the new coverage level of the terminal to the Cell Update message, and send the message to the core network node by means of the access network node, so that the core network node obtains the new coverage level of the terminal according to the received Cell Update message.
  • the new coverage level sent by the access network node may be obtained by the core network node in a random access procedure. After the terminal is blocked by an obstacle or the terminal in an idle state performs cell reselection, the terminal needs a higher coverage level to ensure relatively good service transmission. In this case, the terminal may actively trigger the random access procedure by detecting a signal strength change.
  • the terminal may add the new coverage level of the terminal to a message in the random access procedure, and send the message to the core network node by means of the access network node, so that the core network node obtains the new coverage level of the terminal according to the received message.
  • the terminal may add the new coverage level of the terminal to a packet data unit (PDU) message, and send the PDU message to the core network node by means of the access network node, so that the core network node obtains the new coverage level of the terminal according to the received message.
  • PDU packet data unit
  • a manner for receiving, by the core network node, the new coverage level sent by the access network node is as follows: The access network node receives coverage information sent by the terminal, determines a new coverage level according to the received coverage information, and then sends the new coverage level to the core network node. In this case, the core network node can receive the new coverage level sent by the access network node.
  • the access network node may obtain the coverage information of the terminal in at least one of the routing area update procedure, the cell update procedure, or the random access procedure that are described in manner 1, and determine the new coverage level of the terminal according to the obtained coverage information of the terminal. For example, when the coverage information of the terminal is a receive level of a signal, if the coverage information that is of the terminal and that is obtained by the access network node in the cell update procedure is ⁇ 90 dBm, it indicates that the terminal is in an extremely poor coverage environment. In this case, the access network node may determine a new coverage level of the terminal according to the coverage information, for example, the new coverage level may be 20 dB coverage enhancement.
  • Manner 2 The core network node receives coverage information sent by the access network node, determines a new coverage level according to the received coverage information, and then updates the terminal coverage level according to the determined new coverage level.
  • a manner for receiving, by the core network node, the coverage information sent by the access network node may be as follows: The access network node receives coverage information sent by the terminal, and sends the coverage information to the core network node. In this case, the core network node can receive the coverage information sent by the access network node.
  • the core network node may obtain the coverage information of the terminal in at least one of the routing area update procedure, the cell update procedure, or the random access procedure that are described in manner 1, and determine the new coverage level of the terminal according to the obtained coverage information.
  • obtaining the coverage information of the terminal or the new coverage level of the terminal by the core network node in at least one of the routing area update procedure, the cell update procedure, or the random access procedure is only used as an example to describe how the core network node obtains the new coverage level of the terminal.
  • the core network node may obtain the coverage information of the terminal or the new coverage level of the terminal in another procedure performed between the core network node and the terminal.
  • a process of obtaining the coverage information of the terminal or the new coverage level of the terminal by the core network node is not specifically limited in this embodiment of the present invention.
  • the core network node sends a first packet paging message to the access network node.
  • the first packet paging message is used for paging the terminal, the first packet paging message includes the terminal information of the terminal, and the terminal information may include the terminal type.
  • the terminal information may further include the terminal coverage level.
  • specific content included in the first packet paging message may be shown in table 1.
  • Type/Reference Presence Format Length PDU type PDU type M V 1 IMSI IMSI M TLV 5-10 DRX Parameters DRX Parameters O TLV 4 BVCI BVCI C TLV 4 Location Area Location Area C TLV 7 Routing Area Routing Area C TLV 8 BSS Area Indication BSS Area Indication C TLV 3 (note) PFI PFI O TLV 3 ABQP ABQP O TLV 13-? QoS Profile QoS Profile M TLV 5 P-TMSI TMSI O TLV 6 Terminal Terminal O TLV 3 Information Information
  • the Information elements column shows information elements included in the first packet paging message.
  • the Type/Reference column indicates types of the information elements included in the first packet paging message.
  • the Presence column indicates whether the information elements included in the first packet paging message are mandatory. In the Presence column, O indicates that the information element is optional, M indicates that the information element is mandatory, and C indicates that the information element is conditional.
  • the Format column indicates formats of the information elements included in the first packet paging message. In this column, TLV indicates that the format of the information element includes a type, a length, and a value, and V indicates that the format of the information element is a value.
  • the Length column indicates lengths of the information elements included in the first packet paging message, and a length unit is a byte.
  • the information elements included in the first packet paging message sent by the core network node to the access network node may be a PDU type, an IMSI, discontinuous reception (DRX) parameters, a Base Station Subsystem GPRS protocol virtual connection identifier (BVCI), a Location Area, a Routing Area, a base station system area indication (BSS area indication), a packet flow identifier (PFI), an aggregate base station system quality of service profile (ABQP), a quality of service profile (QoS profile), a P-TMSI, and terminal information.
  • a format of the terminal information may be a TLV format, and a length of the terminal information is 3 bytes.
  • a composition manner of the terminal information may be shown in table 2.
  • the octet 1 is used to indicate an IEI of the terminal information.
  • the IEI of the terminal information may be X90.
  • the octets 2 and 2a are used to indicate a length of information content included in the terminal information.
  • the octet 3 is used to indicate the information content included in the terminal information.
  • 3 low-order bits may be used to indicate the terminal type, and the remaining 5 bits may be reserved and used to subsequently indicate other information of the terminal.
  • a correspondence between the terminal type and code including 3 bits may be shown in table 3.
  • a composition manner of the terminal information may be shown in table 4.
  • 3 low-order bits may be used to indicate the terminal type
  • 3 bits from the fourth bit to the sixth bit are used to indicate the terminal coverage level
  • the remaining 2 bits are reserved bits and used to subsequently indicate other information of the terminal.
  • the correspondence between the terminal type and code including the 3 low-order bits may be shown in table 3
  • a correspondence between the terminal coverage level and code including the 3 bits from the fourth bit to the sixth bit may be shown in table 5.
  • the access network node receives the first packet paging message sent by the core network node.
  • the access network node After the access network node receives the first packet paging message sent by the core network node, that the access network node determines, according to the first packet paging message, that the terminal is the M2M terminal may specifically include S 504 .
  • the access network node determines, according to a terminal type included in the terminal information, that a terminal is an M2M terminal.
  • the access network node may determine, according to the terminal information that is carried in the first packet paging message and that includes the terminal type, whether the terminal is the M2M terminal. After the terminal is determined as the M2M terminal, perform S 505 . When the access network node determines that the terminal is a normal terminal, the access network node may send a non-coverage-enhanced second packet paging message to the terminal.
  • a process of determining, by the access network node according to the terminal type included in the first packet paging message, whether the terminal is an M2M terminal may be as follows: When the composition manner of the terminal information in the first packet paging message received by the access network node is shown in table 2, if code including 3 low-order bits of the octet 3 in the terminal information is 001, the access network node can look up table 3 according to the code 001, to determine that the terminal is an M2M terminal. If the code including 3 low-order bits of the octet 3 in the terminal information is 000, the access network node can look up table 3 according to the code 000, to determine that the terminal is a normal terminal.
  • the access network node sends a coverage-enhanced second packet paging message to the terminal.
  • coverage-enhanced second packet paging message may be as follows: More time domain resources are occupied for transmitting a coverage-enhanced second packet paging message than transmitting a non-coverage-enhanced second packet paging message. More frequency resources are occupied for transmitting a coverage-enhanced second packet paging message than transmitting a non-coverage-enhanced second packet paging message. Transmit power for transmitting a coverage-enhanced second packet paging message is higher than transmit power for transmitting a non-coverage-enhanced second packet paging message.
  • a modulation scheme used for transmitting a coverage-enhanced second packet paging message is more robust than a modulation scheme used for transmitting a non-coverage-enhanced second packet paging message.
  • a coding scheme used for transmitting a coverage-enhanced second packet paging message is more robust than a coding scheme used for transmitting a non-coverage-enhanced second packet paging message.
  • a quantity of bits used for transmitting a coverage-enhanced second packet paging message is smaller than a quantity of bits used for transmitting a non-coverage-enhanced second packet paging message.
  • S 505 may be specifically as follows: The access network node sends the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level.
  • a process of sending, by the access network node, the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level may be as follows:
  • the composition manner of the terminal information in the first packet paging message received by the access network node is shown in table 4, if code including 3 bits from the fourth bit to the sixth bit of the octet 3 in the terminal information is 001, the access network node may first look up table 5 according to the code 001, to determine that the terminal coverage level is 10 dB coverage enhancement, that is, the access network node may determine that the coverage level required by the terminal is 10 dB coverage enhancement, and then may send the coverage-enhanced second packet paging message to the terminal according to the determined 10 dB coverage enhancement.
  • an access network node after receiving a first packet paging message sent by a core network node, an access network node can determine, according to the first packet paging message, whether a paged terminal is an M2M terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • the access network node can determine a type of the paged terminal by using the first packet paging message sent by the core network node, and send a corresponding second packet paging message to the terminal according to the determined type of the terminal. Therefore, after determining that the paged terminal is the M2M terminal, the access network node sends the coverage-enhanced second packet paging message to the terminal, and normal use of an M2M service of the terminal is ensured.
  • the first packet paging message sent by the core network node to the access network node may further include a terminal coverage level.
  • the access network node may send the coverage-enhanced second packet paging message to the terminal according to the terminal coverage level included in the first packet paging message.
  • the access network node may send a coverage-enhanced second packet paging message of a corresponding level to the terminal according to a coverage requirement of the terminal, so that a paging success rate of the M2M terminal is increased, and the normal use of the M2M service of the terminal is further ensured.
  • information that is included in a first packet paging message and that is used to determine that a paged terminal is an M2M terminal is an IMSI of the terminal.
  • an access network node can determine a type of the paged terminal according to a pre-stored mapping table in the access network node and the IMSI that is included in the received first packet paging message and that is of the terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • this method may include the following steps.
  • the access network node receives a first packet paging message sent by a core network node.
  • the first packet paging message includes an IMSI of a terminal, and the first packet paging message is used for paging the terminal.
  • the access network node After the access network node receives the first packet paging message sent by the core network node, that the access network node can determine, according to the first packet paging message, that the terminal is an M2M terminal may specifically include the following steps: S 602 and S 603 .
  • the access network node obtains a terminal type according to an IMSI and a pre-stored mapping table.
  • the access network node may look up the pre-stored mapping table according to the IMSI that is included in the first packet paging message and that is of the terminal, to obtain the terminal type corresponding to the IMSI of the terminal.
  • the mapping table may include the IMSI of the terminal and the terminal type corresponding to the IMSI of the terminal.
  • a composition manner of the mapping table may be shown in table 6.
  • an IMSI 1 indicates an IMSI of a first terminal
  • an IMSI 2 indicates an IMSI of a second terminal.
  • an IMSI n indicates an IMSI of an n th terminal.
  • Terminal Type indicates a terminal type corresponding to an IMSI.
  • a process of obtaining the IMSI that is included in the mapping table and that is of the terminal, and the terminal type corresponding to the IMSI may be as follows:
  • the access network node obtains, according to registration information of the terminal, the IMSI of the terminal and the terminal type corresponding to the IMSI, and stores, in the mapping table, the obtained IMSI of the terminal and the obtained terminal type corresponding to the IMSI.
  • the IMSI of the terminal and the terminal type corresponding to the IMSI may be obtained by the access network node according to subscription information of the terminal, or the IMSI of the terminal and the terminal type corresponding to the IMSI may be obtained according to an upper-layer service used by the terminal.
  • mapping table further includes a terminal coverage level corresponding to the IMSI of the terminal.
  • a composition manner of the mapping table may be shown in table 7, and Coverage Class indicates a terminal coverage level corresponding to an IMSI.
  • the access network node may obtain the terminal coverage level corresponding to the IMSI of the terminal when the terminal accesses a network, and store, in the mapping table, the obtained terminal coverage level corresponding to the IMSI. After the terminal accesses the network, the terminal coverage level may change. Therefore, the access network node needs to update the terminal coverage level that is stored in the mapping table and that corresponds to the IMSI of the terminal. Specifically, when the terminal coverage level changes, a new coverage level that is of the terminal and that corresponds to the IMSI of the terminal may be obtained by the access network node in any one of the following manners.
  • Manner 1 The access network node receives a new coverage level sent by the terminal, and updates the terminal coverage level in the mapping table according to the new coverage level.
  • the terminal may add, to messages such as a random access message, a measurement report message, or uplink data, an extended information element that carries the new coverage level of the terminal, so as to report the new coverage level of the terminal to the access network node.
  • messages such as a random access message, a measurement report message, or uplink data
  • an extended information element that carries the new coverage level of the terminal, so as to report the new coverage level of the terminal to the access network node.
  • Manner 2 The access network node receives coverage information sent by the terminal, determines a new coverage level according to the coverage information, and further updates the terminal coverage level in the mapping table according to the new coverage level.
  • the terminal may add, to messages such as a random access message, a measurement report message, or uplink data, an extended information element that carries the coverage information of the terminal.
  • the access network node can obtain the coverage information of the terminal according to the extended information element in the messages such as the random access message, the measurement report message, or the uplink data, then determine the new coverage level of the terminal according to the obtained coverage information of the terminal, and update the terminal coverage level according to the new coverage level.
  • the coverage information of the terminal is a receive level of a signal
  • the coverage information that is of the terminal and that is obtained by the access network node by using the random access message is ⁇ 95 dBm, it indicates that the terminal is in an extremely poor coverage environment.
  • the access network node may determine a new coverage level of the terminal according to the coverage information, for example, the determined new coverage level may be 20 dB coverage enhancement.
  • the access network node determines, according to the terminal type, that a terminal is an M2M terminal.
  • the access network node may determine, according to the IMSI of the terminal and the pre-stored mapping table, whether the terminal is an M2M terminal. When the terminal is determined as an M2M terminal, perform S 604 . When the access network node determines that the terminal is a normal terminal, the access network node may send a non-coverage-enhanced second packet paging message to the terminal.
  • the access network node may look up the pre-stored mapping table according to the IMSI 2, to determine that the terminal type is the M2M terminal. If the IMSI that is included in the first packet paging message received by the access network node and that is of the terminal is the IMSI 1, the access network node may look up the pre-stored mapping table according to the IMSI 1, to determine that the terminal type is the normal terminal.
  • the access network node sends a coverage-enhanced second packet paging message to the terminal.
  • coverage-enhanced second packet paging message may be as follows: More time domain resources are occupied for transmitting a coverage-enhanced second packet paging message than transmitting a non-coverage-enhanced second packet paging message. More frequency resources are occupied for transmitting a coverage-enhanced second packet paging message than transmitting a non-coverage-enhanced second packet paging message. Transmit power for transmitting a coverage-enhanced second packet paging message is higher than transmit power for transmitting a non-coverage-enhanced second packet paging message.
  • a modulation scheme used for transmitting a coverage-enhanced second packet paging message is more robust than a modulation scheme used for transmitting a non-coverage-enhanced second packet paging message.
  • a coding scheme used for transmitting a coverage-enhanced second packet paging message is more robust than a coding scheme used for transmitting a non-coverage-enhanced second packet paging message.
  • a quantity of bits used for transmitting a coverage-enhanced second packet paging message is smaller than a quantity of bits used for transmitting a non-coverage-enhanced second packet paging message.
  • mapping table stored in the access network node further includes a terminal coverage level corresponding to the IMSI of the terminal
  • S 604 may be specifically as follows: The access network node obtains the terminal coverage level according to the IMSI and the mapping table, and sends the coverage-enhanced second packet paging message to the terminal according to the obtained terminal coverage level.
  • the composition manner of the pre-stored mapping table in the access network node is the manner shown in table 7
  • the IMSI that is included in the first packet paging message received by the access network node from the core network node and that is of the terminal is the IMSI 2
  • the access network node looks up the pre-stored mapping table according to the IMSI 2, and can obtain the terminal coverage level of 10 dB coverage enhancement.
  • an access network node after receiving a first packet paging message sent by a core network node, an access network node can determine, according to the first packet paging message, whether a paged terminal is an M2M terminal, and send a coverage-enhanced second packet paging message to the terminal after determining that the paged terminal is the M2M terminal.
  • the access network node can determine a type of the paged terminal by using the first packet paging message sent by the core network node, and send a corresponding second packet paging message to the terminal according to the determined type of the terminal. Therefore, after determining that the paged terminal is the M2M terminal, the access network node sends the coverage-enhanced second packet paging message to the terminal, and normal use of an M2M service of the terminal is ensured.
  • the access network node can determine, according to an IMSI of the terminal, the coverage level of the terminal that needs to be paged. In this way, the access network node may send a coverage-enhanced second packet paging message of a corresponding level to the terminal according to the obtained terminal coverage level. The access network node sends a coverage-enhanced second packet paging message of a corresponding level to the terminal according to a coverage requirement of the terminal, so that a paging success rate of the M2M terminal is increased, and the normal use of the M2M service running on the terminal is further ensured.
  • the disclosed apparatus and method may be implemented in other manners.
  • the described apparatus embodiment is merely an example.
  • the module or unit division is merely logical function division and may be other division in actual implementation.
  • a plurality of units or components may be combined or integrated into another apparatus, or some features may be ignored or not performed.
  • the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented by using some interfaces.
  • the indirect couplings or communication connections between the apparatuses or units may be implemented in electronic, mechanical, or other forms.
  • the units described as separate parts may or may not be physically separate, and parts displayed as units may be one or more physical units, may be located in one place, or may be distributed on different places. Some or all of the units may be selected according to actual requirements to achieve the objectives of the solutions of the embodiments.
  • functional units in the embodiments of the present invention may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units are integrated into one unit.
  • the integrated unit may be implemented in a form of hardware, or may be implemented in a form of a software functional unit.
  • the integrated unit When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, the integrated unit may be stored in a readable storage medium. Based on such an understanding, the technical solutions of the present invention essentially, or the part contributing to the prior art, or all or some of the technical solutions may be implemented in the form of a software product.
  • the software product may be stored in a storage medium and includes several instructions for instructing a device (which may be a single-chip microcomputer, a chip or the like) or a processor to perform all or some of the steps of the methods described in the embodiments of the present invention.
  • the foregoing storage medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disc.

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CN110493755B (zh) 2021-12-14
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EP3171649A4 (fr) 2017-08-09
EP3672336B1 (fr) 2021-07-21
US20170171694A1 (en) 2017-06-15
EP3972357B1 (fr) 2023-07-05
EP3171649A1 (fr) 2017-05-24
EP3972357A1 (fr) 2022-03-23
US11206518B2 (en) 2021-12-21
ES2768379T3 (es) 2020-06-22
US20200092697A1 (en) 2020-03-19
CN105557045B (zh) 2019-06-11
CN105557045A (zh) 2016-05-04
EP3672336A1 (fr) 2020-06-24

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